Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net loss	$ (17,688,522)	$ (9,355,592)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization and depreciation	62,372	54,450
Noncash lease expense	130,670	123,110
Share-based compensation	409,933	376,339
Issuance of common stock for milestone	5,000,000
Issuance of common stock for services	59,000	159,238
Deferred issuance costs written off	61,609
Amortization of deferred issuance costs associated with convertible debt	1,205
Gain on disposition of office furniture		(3,843)
Change in operating assets and liabilities:
Contracts and grants receivable	815,061	182,880
Prepaid expenses and other current assets	384,424	(452,255)
Security deposit	(20)	(23)
Research and development incentives receivable	21,924	(444,043)
Operating lease liability	(131,845)	(121,938)
Accounts payable and accrued expenses	(1,157,160)	1,968,565
Accrued compensation	576,923	3,545
Net cash used in operating activities	(11,454,426)	(7,509,567)
Investing activities:
Purchases of office furniture and equipment	(7,147)	(30,209)
Proceeds from sale of office furniture		5,500
Net cash used in investing activities	(7,147)	(24,709)
Financing activities:
Proceeds from issuance of common stock pursuant to FBR At Market Issuance Sales Agreement	14,198,160	4,142,456
Costs associated with issuance of common stock	(656,264)	(132,080)
Proceeds from exercise of warrants	860,918
Proceeds from the exercises of stock options	4,987	1,882
Proceeds from paycheck protection program	417,830
Proceeds from convertible debt	10,000,000
Costs associated with issuance of convertible debt	(141,466)
Principal repayment – financing lease	(7,516)	(6,803)
Net cash provided by financing activities	24,676,649	4,005,455
Effect of exchange rate on cash and cash equivalents	40,879	(34,188)
Net increase (decrease) in cash and cash equivalents	13,255,955	(3,563,009)
Cash and cash equivalents at beginning of year	5,420,708	8,983,717
Cash and cash equivalents at end of year	18,676,663	5,420,708
Supplemental information:
Cash paid for state income taxes	4,021	11,132
Cash paid for interest	34,406
Cash paid for lease liabilities:
Operating lease:	141,050	140,017
Financing lease:	8,544	8,544
Right-of use assets and lease liabilities recorded	240,727	255,965
Deferred issuance cost reclassified to additional-paid-in capital	67,733	33,535
Issuance of restricted common stock to vendor for website development costs		46,500
Issuance of common stock to vendor included in prepaid expenses		$ 2,550